/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package org.siscoh.controller;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Israel
 */
@WebServlet(name = "Controlador", urlPatterns = {"/Controlador"})
public class Controlador extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        
        //String s = (String) request.getAttribute("action");
        
        String controllerName = "org.siscoh.controller.Controlador"+request.getParameter("action");
        String urlToGo = "404.html";
        
        AbstractController controller;
        
        try {
            String url;
            System.err.println("Classe controladora = "+controllerName);
            controller = (AbstractController) Class.forName(controllerName).newInstance();
            //controller = (AbstractController) Class.forName("Controlador"+request.getParameter("action")).newInstance();
            url = controller.executa(request, response);
            
            if(url != null && !url.equals(""))
            {
                if(url.startsWith("?"))
                    urlToGo = "index.jsp"+url;
                else
                    urlToGo = "index.jsp?page="+url;
            }                
            else
                urlToGo = "index.jsp";
                
            System.err.println("CONTROLADOR = "+urlToGo);
        } catch(Exception e)
        {
            System.err.println("Erro!");
            e.printStackTrace(System.err);
            HttpSession session = request.getSession();
            if(session != null)
            {
                session.invalidate();
            }
        }
        finally
        {
            System.err.println("\t\tFINALLY! Goingo to = "+urlToGo);
            request.getRequestDispatcher(urlToGo).forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
